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From: "Tommy James" <twjames@healed.org>
To: "FlyRotary" <flyrotary@lancaironline.net>
Subject: FW: [FlyRotary] Re: Cooling fans
Date: Mon, 11 Aug 2003 17:26:43 -0400
Message-ID: <NEBBIFDPKMDNOGJHELANGEKGDBAA.twjames@healed.org>
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-----Original Message-----
From: Tommy James [mailto:tommy.james@eastcoastaircharter.com]
Sent: Monday, August 11, 2003 3:40 PM
To: 'Tommy James'
Subject: RE: [FlyRotary] Re: Cooling fans


Lynn & Marv,

I think you both said the same thing in different ways. Right? 
At any rate, I can do that, and let you know how it works.  Still
undecided on the fans although there are two small ones (7"x7" 400cfm)
on order.  
First step is to open the cowl flap opening to 144sq" (6"X24"), reseal
everywhere, and adjust the left inlet.  If that doesn't work then the
fans go on..:0) Oh! Also plumb in the ASI to measure "Dynamic Pressure
Recovery"
Regards,
Tommy James<><

"Use a double throw double pole switch. Connect both fan wires to the
center, (switchable) connections. Connect the power wires to one end
connections and to the other end connect a jumper, shorting the two
terminals. In the "OFF" position.  The wires from the fan are shunted,
and the fan will not spin up to any extent until you turn it on."

Lynn

"Put the power to the motor through a DPDT relay... the NO contacts are
the +/- power in, the common contacts go to the motor.  You connect the
NC contacts together so you short out the current coming from the
motor-now-generator when the relay is de-energized.  The short across
the motor works like a brake and keeps it (or stops it, in our case)from
spinning.  I don't see why this same thinking couldn't be applied to a
fan motor.  Just a thought.

           <Marv>